Effects of refinery processes on the quality of various water samples from Kaduna Refinery and Petrochemical Company (KRPC) Limited was investigated. Water quality assessment was carried out on samples collected at different water treatment sampling points in the refinery. The physicochemical parameters and other forms of analytical processes used in the work were of the standards of American Standards of Testing Materials (ASTM) and American Public Health Association (APHA) using spectrophotometric and volumetric methods. Results obtained showed that the quality of water samples subjected to treatment at each water treatment section in KRPC during the course of study was acceptable from physico-chemical parameters assessed and may not be injurious to the boiler and its other end uses. Also, result of the pre and post refinery operations on cooling water sample assessed showed the significant effect the refinery operation had on the cooling water.
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